API
Penetration Testing
A full-scope penetration test of REST, GraphQL, or other API architectures, evaluating authentication, authorization, data exposure, and endpoint behavior.
Full OWASP API Top 10
Complete coverage of API-specific vulnerabilities
OWASP API Security Top 10
Every assessment covers the complete OWASP API Security Top 10 framework.
API1: Broken Object Level Authorization
Testing for unauthorized access to objects by manipulating IDs in API requests to access other users' data.
API2: Broken Authentication
Weak authentication mechanisms, token flaws, credential handling issues, and session management vulnerabilities.
API3: Broken Object Property Level Authorization
Excessive data exposure through property-level access control flaws and mass assignment vulnerabilities.
API4: Unrestricted Resource Consumption
Missing or inadequate rate limiting enabling brute force attacks, DoS, and resource exhaustion.
API5: Broken Function Level Authorization
Unauthorized access to admin functions, privileged operations, and horizontal/vertical privilege escalation.
API6: Unrestricted Access to Sensitive Flows
Business logic flaws, workflow bypasses, and abuse of sensitive business flows without restrictions.
API7: Server Side Request Forgery
SSRF vulnerabilities allowing attackers to make requests to internal resources through the API server.
API8: Security Misconfiguration
Insecure default configurations, verbose errors, CORS misconfigurations, and missing security headers.
API9: Improper Inventory Management
Undocumented endpoints, deprecated API versions, shadow APIs, and exposed debug endpoints.
API10: Unsafe Consumption of APIs
Vulnerabilities from trusting third-party APIs without proper validation and security controls.
Our Methodology
Automated fuzzing combined with deep manual endpoint manipulation.
Discovery
API endpoint enumeration, schema analysis, and authentication flow mapping.
Testing
Authenticated and unauthenticated testing across all OWASP API Top 10 categories.
Exploitation
Real-world exploitation scenarios demonstrating business impact.
Reporting
Clear mapping of vulnerabilities to business risk with remediation guidance.
Why API Security Matters
APIs often expose direct access to backend systems. One broken authorization check can compromise an entire environment.
Prevent Data Leakage
Identify endpoints that expose more data than intended to unauthorized users.
Validate Access Controls
Ensure API logic and access control boundaries are properly enforced.
Protect Backend Systems
Prevent direct exploitation of backend services through API vulnerabilities.
Free Retesting
Complimentary retest of all findings within 30 days to validate remediation.
Related Services
Explore other security assessments that complement this service.
Web Application Testing
Comprehensive OWASP WSTG-aligned testing of web applications for authentication, authorization, and business logic.
Learn moreMobile App Testing
Security evaluation of iOS and Android applications including static/dynamic analysis and API communication.
Learn moreCloud Security Assessment
Configuration review of AWS, Azure, or GCP environments aligned with CIS Benchmarks.
Learn moreFrequently Asked Questions
What types of APIs do you test?
We test REST APIs, GraphQL APIs, SOAP APIs, gRPC, and WebSocket-based APIs. Whether your API is public-facing, internal, or partner-only, we have the methodology to assess it thoroughly.
Do you need API documentation to perform testing?
API documentation (Swagger/OpenAPI specs, Postman collections) is helpful and speeds up the engagement, but it is not required. We can discover and map endpoints through reconnaissance if documentation is unavailable.
How do you test APIs that require authentication?
We test with valid authentication tokens across multiple user roles to evaluate authorization boundaries. This includes testing for broken object-level authorization (BOLA), broken function-level authorization, and token manipulation attacks.
Will API testing affect our production environment?
We design our tests to be safe for production environments. We avoid destructive operations and coordinate with your team on any tests that could generate significant load. We can also test against staging environments if preferred.
How long does an API penetration test take?
Most API assessments take 3–5 business days depending on the number of endpoints and complexity. Large APIs with hundreds of endpoints or complex business logic may require additional time.
What’s included in the report?
You receive an executive summary, detailed technical findings with CVSS scores, proof-of-concept requests and responses for each vulnerability, remediation guidance, and a complimentary retest within 30 days.
Ready to Secure Your API?
Get a customized proposal within 24 hours. No sales calls, no pressure.
Get Started Book a Call